Apparatus

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sensors Mode-S transponder

0AC3F8

ICAO 24-bit transponder address · allocated to Costa Rica

Currently assigned to HK-5293 · ATR-72-600

Hex
0AC3F8
Octal
02541770
Decimal
705,528
Country
CR
Tail
HK-5293
Type
AT76
No current signal · last broadcast Jul 26, 20:55 UTC
Flights observed
325
Distinct callsigns
20
Country
CR
Last broadcast
Jul 26, 20:55 UTC

Last known position

Most recent position reported by Mode-S 0AC3F8.

Country allocation

The ICAO 24-bit address 0AC3F8 falls within the block assigned to Costa Rica (CR) by ICAO Annex 10, Volume III. Every aircraft registered in Costa Rica receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 20 distinct

Callsign Airline Flights Last seen
AVR4834 Avianca Express 20 2026-07-26
AVR4835 - 19 2026-07-26
AVR4860 - 16 2026-07-25
AVR4859 - 16 2026-07-24
AVR4880 - 15 2026-07-26
AVR4881 - 12 2026-07-26
AVR4810 - 12 2026-07-26
AVR4809 - 12 2026-07-26
AVR4853 - 11 2026-07-25
AVR4852 - 8 2026-07-25
EFY9122 EasyFly 6 2026-07-22
AVR4858 - 6 2026-07-06
AVR4857 - 6 2026-07-06
EFY9089 EasyFly 5 2026-07-17
AVR5213 - 5 2026-06-16
AVR4866 - 5 2026-07-06
AVR4802 - 5 2026-07-08
AVR4800 - 5 2026-07-07
EFY9107 EasyFly 4 2026-07-22
EFY9106 EasyFly 4 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AVR4834 NVA → BOG Jul 26, 20:35 UTCJul 26, 20:55 UTC20m
2026-07-26 AVR4835 - Jul 26, 18:35 UTCJul 26, 18:50 UTC15m
2026-07-26 AVR4881 - Jul 26, 17:05 UTCJul 26, 17:25 UTC20m
2026-07-26 AVR4880 - Jul 26, 15:00 UTCJul 26, 15:15 UTC15m
2026-07-26 AVR4809 - Jul 26, 13:25 UTCJul 26, 13:50 UTC25m
2026-07-26 AVR4810 - Jul 26, 11:55 UTCJul 26, 12:10 UTC15m
2026-07-25 EFY9131 EOH → BOG Jul 25, 22:20 UTCJul 25, 23:05 UTC45m
2026-07-25 EFY9130 BOG → EOH Jul 25, 21:00 UTCJul 25, 21:40 UTC40m
2026-07-25 EFY7835 MZL → BOG Jul 25, 15:30 UTCJul 25, 16:10 UTC40m
2026-07-25 EFY7834 BOG → MZL Jul 25, 14:10 UTCJul 25, 14:40 UTC30m
2026-07-25 AVR4852 - Jul 25, 03:05 UTCJul 25, 04:05 UTC1h 0m
2026-07-25 AVR4853 - Jul 25, 01:35 UTCJul 25, 02:10 UTC35m
2026-07-25 AVR4860 - Jul 25, 00:15 UTCJul 25, 00:45 UTC30m
2026-07-24 AVR4859 - Jul 24, 22:15 UTCJul 24, 22:35 UTC20m
2026-07-24 AVR4834 NVA → BOG Jul 24, 20:40 UTCJul 24, 21:05 UTC25m
2026-07-24 AVR4835 - Jul 24, 18:35 UTCJul 24, 18:50 UTC15m
2026-07-24 AVR4881 - Jul 24, 17:05 UTCJul 24, 17:25 UTC20m
2026-07-24 AVR4880 - Jul 24, 15:35 UTCJul 24, 15:45 UTC10m
2026-07-24 AVR4809 - Jul 24, 14:00 UTCJul 24, 14:20 UTC20m
2026-07-24 AVR4810 - Jul 24, 12:30 UTCJul 24, 12:40 UTC10m
2026-07-24 EFY9169 PPN → BOG Jul 24, 00:00 UTCJul 24, 00:20 UTC20m
2026-07-23 EFY9168 BOG → PPN Jul 23, 21:45 UTCJul 23, 22:05 UTC20m
2026-07-23 EFY9045 NVA → BOG Jul 23, 19:05 UTCJul 23, 19:25 UTC20m
2026-07-23 EFY9044 BOG → NVA Jul 23, 17:25 UTCJul 23, 17:40 UTC15m
2026-07-22 EFY9123 EOH → BOG Jul 22, 19:00 UTCJul 22, 19:50 UTC50m
2026-07-22 EFY9122 BOG → EOH Jul 22, 17:10 UTCJul 22, 17:45 UTC35m
2026-07-22 EFY9107 EOH → BOG Jul 22, 15:10 UTCJul 22, 15:55 UTC45m
2026-07-22 EFY9106 BOG → EOH Jul 22, 13:45 UTCJul 22, 14:25 UTC40m
2026-07-22 EFY9109 EOH → BOG Jul 22, 11:15 UTCJul 22, 12:00 UTC45m
2026-07-21 EFY8979 APO → EOH Jul 21, 22:30 UTCJul 21, 22:35 UTC5m
2026-07-21 EFY8978 EOH → APO Jul 21, 20:55 UTCJul 21, 21:05 UTC10m
2026-07-21 EFY8987 MTR → EOH Jul 21, 20:05 UTCJul 21, 20:15 UTC10m
2026-07-21 EFY8986 EOH → MTR Jul 21, 18:00 UTCJul 21, 18:10 UTC10m
2026-07-21 EFY8947 UIB → EOH Jul 21, 15:05 UTCJul 21, 15:10 UTC5m
2026-07-21 EFY8971 - Jul 21, 12:45 UTCJul 21, 12:55 UTC10m
2026-07-21 EFY8970 EOH → APO Jul 21, 11:05 UTCJul 21, 11:15 UTC10m
2026-07-20 EFY8954 EOH → UIB Jul 20, 21:10 UTCJul 20, 21:15 UTC5m
2026-07-20 EFY8948 EOH → UIB Jul 20, 16:05 UTCJul 20, 16:15 UTC10m
2026-07-20 EFY9122 BOG → EOH Jul 20, 14:40 UTCJul 20, 15:20 UTC40m
2026-07-20 AVR4852 - Jul 20, 02:45 UTCJul 20, 03:20 UTC35m
2026-07-20 AVR4853 - Jul 20, 01:25 UTCJul 20, 01:55 UTC30m
2026-07-20 AVR4860 - Jul 20, 00:05 UTCJul 20, 00:30 UTC25m
2026-07-19 AVR4859 - Jul 19, 21:55 UTCJul 19, 22:15 UTC20m
2026-07-19 AVR4834 - Jul 19, 20:30 UTCJul 19, 21:00 UTC30m
2026-07-19 AVR4835 - Jul 19, 18:25 UTCJul 19, 18:40 UTC15m
2026-07-19 AVR4881 - Jul 19, 17:00 UTCJul 19, 17:25 UTC25m
2026-07-19 AVR4880 - Jul 19, 15:10 UTCJul 19, 15:20 UTC10m
2026-07-19 AVR4809 - Jul 19, 13:40 UTCJul 19, 14:00 UTC20m
2026-07-19 AVR4810 - Jul 19, 11:45 UTCJul 19, 12:00 UTC15m
2026-07-19 AVR4889 BGA → BOG Jul 19, 03:45 UTCJul 19, 04:05 UTC20m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the HK-5293 page for operator, model, and routing details .

Mode-S 0AC3F8 frequently asked

What is Mode-S code 0AC3F8?
0AC3F8 is an ICAO 24-bit transponder address. Allocated to Costa Rica. Assigned to HK-5293.
Where is Mode-S 0AC3F8 registered?
Mode-S code 0AC3F8 is allocated to Costa Rica (CR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 0AC3F8 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0AC3F8, octal 02541770, decimal 705,528.
What flights does 0AC3F8 operate?
Mode-S 0AC3F8 has broadcast 20 distinct callsigns, including AVR4834, AVR4835, AVR4860, AVR4859, AVR4880.